Main Street over Hart Ditch
Lake County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Main Street over Hart Ditch in Lake County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 14,515 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 249 of the 501 inventoried bridges in Lake County rated good (49.7%); 36 (7.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: substructure 8 to 7.
- Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (41.52287, -87.50105)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 117 ft |
| Location | 00.60 W. of WHITE OAK AVE |
| NBI structure number | 4500402 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Lake County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 WB Ramp to SR over SR 912 Eb/wb Ramps | 2001 | 185,778 | Fair |
| I-80 Ebwb 2 Ramps over Erie-lackawanna Trail | 2005 | 175,670 | Fair |
| I-80 I-94 EB over US 41 N/sr 152 W Rmp 2I | 2005 | 175,670 | Fair |
| I-80i-94 EB over Northcote Ave | 2005 | 172,512 | Good |
| I-80i-94 EB over Hohman Avenue | 2007 | 150,742 | Good |
| I-80i-94 EB over Lt Calumet Riv Monon Tr | 2007 | 150,742 | Good |
All bridges nearby: Lake County, IN bridge conditions · every bridge in Lake County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.